Soldering-tool.



Nn. 663,983. Patented Dec'. la, |900. F. s.. RALEIGH.

SBLDERING TOOL.

(Application med Feb. 2, 1900.)

(No Model.)

` n Memwlml @ZM 4 (I UNITED STATES @PATENT Fries.

FRANK G. RALEIGILOF CHICAGO, ILLINOIS.

SOLDERING-TOOL.

SPECIFICATION forming part of Lettere Patent No. eee-,983, dated December 18, 1900.

Application filed February 2, 1900. Serial No. 3,705. (No model.)

To @ZZ whom, t may concern:

Be it known that I, FRANK G. RALEIGH, a citizen of the United States, residing in the city of Chicago, county of'Cook, and State o f Illinois, have invented a new and useful Improvement in Soldering-Tools, of which the following is a specification.

My invention relates to soldering-tools commonly known as soldering-irons; and the object of my invention is to provide a portable self-heating soldering-tool wherein the tip or bit may be continuously heated by means of gas generated in the tool itself; and as a means to this end it is also my object to provide a gas generator land burner of improved design, a detachable preheater, and other details hereinafter set forth. I attain these objects by themechanism illustrated in the accompanying drawings, in Which- Figure l is a side View of the complete device, showing the preheater in longitudinal section and in position beneath the bit. Fig.

2 is a side View, chieily in longitudinal secj tion, of the bit, generator and burner, and a portion of the reservoir. in longitudinal section of a portion of the reservoir, showing the air-pump. Fig. 4. is an end view of the filter-pipe, showing the ex-l tremity thereof adjacent to the burner.

Similar letters refer to similar parts throughi out the several views.

The air and liquid tight vessel A is preferably metallic and of light construction and serves as a reservoir for the gasolene or other fuel whereby the soldering bit is heated. Said reservoir is preferably cone-shaped and provided with a spherical upper extremity, thus forming a convenient handle whereby the tool may be grasped by the operator. The removable plug a, conveniently located near said spherical extremity, affords means of access to the interior of said reservoir for relling and other purposes, The barrel B, cap-nut b, plunger-stem b', and handpiece b2 constitute parts of an air-pump whereby air may be forcibly injected into said reservoir A. The smaller extremity of said reservoir A is internally threaded to engage the correspondingly-threaded extremity of the filterpipe 0.. Said pipe a lies within said reser- Voir and is suitably apertured to receive the gasolene or other fluid contained within said Fig. 3 is a view reservoir. Within said filter-pipe a' is placed wicking or similar substance for arresting any particles of solid matter which may be suspended in said iiuid and preventing their passage into the burner. Said pipe is notched at its lower extremity, as shown in Fig. 4, to facilitate unscrewing and removal for the purpose of renewing said wicking. Said reservoir A is externally threaded at its said smallerextremity for attachment to the chambered nut or coupling C, which latter forms the connection between said reservoir and the burner D. Said coupling C is internally threaded at the extremity thereof opposite to said reservoir for receiving the threaded extremity of said burner. Said burner D consists for the greater portion of its length of aV hollow cylinder, but has at its extremity opposite to the coupling C a reduced interior diameter forming a conical recess d. The exterior mouth of said recess is a capillary tube through which a liquid may be ejected in the form of a fine spray. Said recess d forms a valve-seat for the correspondin gly-tapered conical extremity e of the'valvespindle E. The greater portion of said valvespindle E lies Within said burner D, but does not occupy the entire cross-sectional area thereof, thus permitting the'passage of liuid through said burner. The base e' of said spindle consists of a disk rigidly secured in a transverse direction Within the coupling C between said reservoir A and said burner D. Said base e' is apertured to aord a passage for the gasolene or other iuid, and the chamber e2, formed within said coupling between said base e' and the smaller extremity of the reservoir A,'1nay be filled with filtering material, such as wicking. The strainer es, consisting,

preferably, of fine wire-gauze, is placed within tion of the latter causes the conical extremity e of spindle E to approach and recede from the recess d in said burner, thus regulating the amount of opening of the burnervalve. The stuffing-nut F incloses a portion of the said burner D and is interiorly threaded to receive the threaded extremity of the coupling C. Said nut F is interiorly chambered IOO to receive packing, and by means of said nut and packing the coupling C and burner D may be adjusted relatively to each other without leakage between said parts. The locknutfoccupies a position on said burner D adjacent to the stuffing-nut F and serves to set said nutFrelativelyto said burner. Upon the outer surface of the burner D, between the extremities thereof and adjacent to said lock-nut f, is a preferably hexagonal portion d for engagement with a wrench whereby the burner-valve may be operated. The extremity of said burner D, opposite to said coupling C, is threaded for attachment to the soldering-bit G, which consists of a hollow cylinder having at its extremity a portion g of pyramidal or other form suitable for soldering. Said bit G is so connected with said burner D .that a jet issuing from the recess d of the latter enters the central aperture of said bit longitudinally thereof. A series of apertures, some of which are marked g', are distributed at frequent intervals in said bit G and serve as Vents for the burning gas whereby the tool is heated. U'pon the exterior of the burner D, adjacent to said bit G, is formed an annular groove h, which is encircled by the hanger H in such a manner that said hanger is free to rotate thereon, but cannot become disengaged thereform. Said hanger H depends from said burner and terminates in a hook 7L', which extends approximately parallel to the bit G and toward the extremity g thereof in such a manner that the preheating-pan J, suspended from said hook, may lie beneath said bit G. Said pan J is adished vessel for holding gasolene or other fuel for heating said bit G and is suspended by means of the eye j, which engages said hook h of the hanger H. The engagement of said hook and eye is such that when the tool is tilted and the reservoir extremity thereof raised said pan tends to slip from said hook 7t'. As saidhanger H rotatesfreely upon the burner D the weight of the pan J will cause said pan to always lie beneath the bit G independently of any rotation of the tool about the longitudinal axis thereof.

In operation the burner D is screwed into the coupling C until the conical recess d in said burner comes to a bearing against the conical extremity e of the valve-spindle E and the burner-valve is closed. The reservoirA is partially filled with gasolene and the plug a is screwed tightly into place. The air-pump is then operated and air introduced into said reservoir until the pressure within said reservoir is considerably greater than atmospheric pressure. Gasolene is introduced into the preheating-pan J and ignited and is permitted to burn until the bit G is heated to such a temperature that a spray of gasoleneissuing from the mouth of the burner D will be ignited upon coming in contact with said bit. Vhen the bit G is thus heated, the burner D is unscrewed from the cellpling C until the valve-spindle E is slightly withdrawn from said burner and the burnervalve thereby opened. The pressure of the air acting upon the gasolenein the reservoir A forces said gasolene into and along the filter-pipe a', and the filtered gasolene passes from said pipe a' through the filtering-chamber e2, through the apertured base e', thence through the burner D, past the valve-spindle E, and is discharged in the form of a fine spray from said burner into the interior of the bit G. As the gasolene is injected into said bit it is volatilizcd and ignited by the heat of said bit. Oxygen is afforded access to the interior of the bit G through the apertures g', and the interior of said bit thus becomes a combustion-chamber. The heat-of the burning gas maintains a sufficient temperature in the bit G to enable the portion g thereof to melt solder and be used as an ordinary soldering-tool. The amount of [low of gasolene through the burner-valve may be easily regulated by varying the position of the burner D within the coupling C. When the gas generation and burning becomes selfcontinuous and the preheater is no longer required, said preheater is easily removed by holding the tool at such an angle that the eye j of the pan J may slip from the hooked portion 7L of the hanger H. Said preheater is noteworthy in that it is so constructed that the pan J will be always suspended in a proper position for heating the bit G and is not influenced by the rotation of the tool about 'its longitudinal axis. Moreover, when said preheater is not in use it may be easily removed without handling.

An important feature of my invention lies in the construction of the burner and valve, as hereinabove described. In my form of valve the spindle E is stationary and the amount of valve-opening is regulated by varying the position of the valve-seat relatively thereto. As the valve-spindle lies almost entirely withinthe burner D and as the passage is provided for the gasolene or other fluid through the base e of said spindle, the necessity for a bend or offset in said burner and the ducts leading thereto is obviated.

It is evident that any other suitable fuel may be substituted for gasolene without departing from my invention.

What I claim as new, and desire to secure by Letters Patent, is-

l. In a soldering-tool, the combination of a reservoii-,a coupling C attached at one extremity to said reservoir, and at the other having a screw-thread, said coupling being longitudinally chambered; a cylindrical taper-pointed valve-spindle E the base whereof consists of a perforated disk secured transversely within said coupling; a cylindrical burnerD having at one extremity a screw-thread for engaging the above-mentioned thread of said coupling and said burner having at the other extremity a conical valve-seat terminating at the outer end in a discharging-aperture, said valve-spindle being adapted to extend longiroo tudinally Within said burner, and the point of said spindle being adapted to enter said conical valve-seat, the rotation of said burner relatively to said coupling causing the regulation of the Valve-opening `in said burner; and a bit connected to said burner.

2. In asoldering-tool, a bit, a reservoir, and a burner, said burner p being connected to said bit and to said reservoir and having an annular groove adapted to support a hanger; in combination With a hanger as aforesaid, said hanger being adapted to loosely encircle said burner at the said groove therein, and said hanger having a hook extending approximately parallel to the said bit; and a preheating-pan having an eye adapted to loosely engage said hook.

3. In a soldering-tool, the combination of a reservoir, a longitudinally-chambered coupling C attached at one extremity to said reservoir, and at the other attached to a cylindrical burner D by means of screw-threads a'cylindrical taper-pointed valve-spindle E secured within said coupling; a cylindrical burnerD as aforesaid, screw-threaded at one extremity for engaging the above-mentioned threaded portion of said coupling, and at the other extremity having a conical valve-seat which terminates in a discharging-aperture, said valve-spindle being adapted to extend longitudinally within said burner and regulate the valve opening in said burner when said burner is rotated relatively to said coupling; a bit connected to said burner; an annular groove on said burner; a hanger adapted to loosely encircle said burner at the said groove therein, said hanger having a hook extending approximately parallel to said bit; and a preheating-pan having an eye adapted to loosely engage said hook, by which construction when the tool is held in a substantially horizontal position, said pan may always assume a position below said tool, and when said tool is sufficiently inclined in a proper direction, said pan may be dropped by gravity from said hook.

FRANK G. RALEIGH. Witnesses:

ARTHUR M. Cox, MARY M. BAOHMAN. 

